Discussion
Can you explain the "Don't twist" comment , have seen this in a couple of other threads , but I don't understand why. May be I'm missing something but not twisting is leaving the stick 1/4 or 3/8ths of an inch higher than it would be in engine running conditions, which is where I thought you would want to see the oil level. Confused of Cheshire.
I wish I could get a definitive answer on this , it drives me 
I've asked several indies , a couple of main dealers , not one comes up with exactly the same answer !
Although 1/4 to 3/8ths of an inch is a small amount , multiply that by the the surface area of the sump , and it can rapidly magnify in to 1/2 to 1 ltr difference , consequently overfill .
Just re read my owners handbook , and all it says is check with engine switched off and on level ground .Now in the aircraft world , they actually specify how long an engine should be shut down before you check the oil , typically 20 minutes . But how long should you allow for drain down on an AJP?
I'm now confusing myself !! Going to overfill now with a few glasses of red
I've asked several indies , a couple of main dealers , not one comes up with exactly the same answer !
Although 1/4 to 3/8ths of an inch is a small amount , multiply that by the the surface area of the sump , and it can rapidly magnify in to 1/2 to 1 ltr difference , consequently overfill .
Just re read my owners handbook , and all it says is check with engine switched off and on level ground .Now in the aircraft world , they actually specify how long an engine should be shut down before you check the oil , typically 20 minutes . But how long should you allow for drain down on an AJP?
I'm now confusing myself !! Going to overfill now with a few glasses of red
gazzab said:
Hi.
LEave the car to cool etc and ensure it is parked on level ground.
Assuming it is a 4.5/front dip....
REmove the dip stick, wipe, push back BUT dont twist. pull out and you should get a good reading (every 2 or 3 goes). Ensure at top of reading.
LEave the car to cool etc and ensure it is parked on level ground.
Assuming it is a 4.5/front dip....
REmove the dip stick, wipe, push back BUT dont twist. pull out and you should get a good reading (every 2 or 3 goes). Ensure at top of reading.
Do as Gazzb says but take the dipstick out while the engine is hot then leave the engine to cool right down - preferably overnight. Then put the dipstick back in - the morning after - and pull it straight back out. This should give you an accurate reading.
Jules.
Cyclone1 said:
....... while the engine is hot then leave the engine to cool right down - preferably overnight. Then put the dipstick back in - the morning after - and pull it straight back out. This should give you an accurate reading.
Jules.
Well, bugger me and I've been doing that wrong all these months
A further ten years of ownership have shown me that the oil stick tube is looooong and inclined so there is a tendency for the oil to follow a capillary path
therefore
It's best to take the stick out overnight. The twist is needed to anchor the interior of the oil stick cap onto the pin(s) at the top of the oil stick tube. This prevents the oil stick from being pumped out by crankcase pressure whlst in use.
I always push it all the way in, twisting at the very end to ensure that the cap hasn't been stopped by the locating pin(s).
If you twist there is a small chance of a smear on the stick level but, if you have left it out overnight, the oil level is clearly distinguishable on the stick.
HTH
therefore
It's best to take the stick out overnight. The twist is needed to anchor the interior of the oil stick cap onto the pin(s) at the top of the oil stick tube. This prevents the oil stick from being pumped out by crankcase pressure whlst in use.
I always push it all the way in
, twisting at the very end to ensure that the cap hasn't been stopped by the locating pin(s).If you twist there is a small chance of a smear on the stick level but, if you have left it out overnight, the oil level is clearly distinguishable on the stick.
HTH
Edited by Mr Cerbera on Sunday 7th August 16:15
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